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HILFIKER PIPE CO

Overview
  • Total Patents
    14
About

HILFIKER PIPE CO has a total of 14 patent applications. Its first patent ever was published in 1970. It filed its patents most often in United States and Canada. Its main competitors in its focus markets civil engineering, environmental technology and packaging and shipping are HELD & FRANCKE BAU AG, SHENZHEN ZHONGBANG GROUP CONSTRUCTION CONTRACT CO LTD and SUPPORTEC CO LTD.

Patent filings in countries

World map showing HILFIKER PIPE COs patent filings in countries
# Country Total Patents
#1 United States 13
#2 Canada 1

Patent filings per year

Chart showing HILFIKER PIPE COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hilfiker William K 12
#2 Hilfiker Harold O 3
#3 Hilfiker William B 2
#4 Hilfiker Arthur L 2
#5 Hilfiker W 1
#6 Hilfiker Harold K 1

Latest patents

Publication Filing date Title
US4661023A Riveted plate connector for retaining wall face panels
US4616959A Seawall using earth reinforcing mats
US4643618A Soil reinforced cantilever wall
US4618283A Archway construction utilizing alternating reinforcing mats and fill layers
US4505621A Wire retaining wall apparatus and method for earthen formations
US4391557A Retaining wall for earthen formations and method of making the same
US4343572A Apparatus and method for anchoring the rigid face of a retaining structure for an earthen formation
US4324508A Retaining and reinforcement system method and apparatus for earthen formations
US4117686A Fabric structures for earth retaining walls
US4051570A Road bridge construction with precast concrete modules
US3922864A Stringer for retaining wall construction
US3834566A Pipe handling attachment for a backhoe
US3631682A Reinforced concrete cribbing